Blessed John de Montmirail
Feast day: September 29
1165 – 1217
Jean de Montmirail, Baron de Montmirail, O.S.B. Cist., was a French nobleman who became a Cistercian monk. He is venerated as a beatus in the Catholic Church.
Text from Wikipedia (Jean de Montmirail), CC BY-SA 4.0